Bolsonaro quickly refused to concede defeat and asked for the election results to be annulled after an evening of chaos at some polling places that followed a last-minute decision to extend voting by two hours.

With 100% of the vote counted, Brazil's electoral court announced that the soon to be 81-year-old Lula held an unassailable lead of nearly 4.4 million votes over opponent Flávio Bolsonaro.